Mechanism for the production of a constant mixture of gas and air.



P. W. WOLF?. MEGHANISM Fon THB PRODUGHON om. CONSTANT MIXTURE of' GASAND AIR.

APPLICATION FILED MAR. 12, 1907. 937,016; @tamed @ci 1&2. MGE.

3 BERUFE-SHEET 271/5555@ wwf/wmf? Y P, w. WoLNP. MEGHANISM PORTERPRODUCTION of A CONSTANT MIXTURB 0F GAS AND AIR.

l Y y APPLICATION PIITED MAR. 12, 1907. 937,016,` j Patented Oct.12,1909.

3 SHEETS-SHEET 2.

l F. W. WOLF?.

MECEANXSM FOR THE PRODUCTION 0F A CONSTANT MIXTURE 0F GAS AND IR. f

- APPLIGATION FILED MAE. 12, 1907.

@is Y Patented 001;. 12, 1909.

3 SHEETS-SHEET 3.-

@jij

@far -V 'Un rr ni i siuiTEs iiifriainfr einen 1a.'

FRIEDRICH WILHELM WOLFR OF BERLIN. GERMANY. ASSIGNOR TO THE FRM 0F SELASGESELLSCHAFT MIT BESCHRNKCIIER, HAFTUNG, OF BERLIN. GERMANY.

MECHANISM FOR THE PRODUCTION 0F A CONSTANT MIXTURE OFGAS AND AIR.

v Specification of Letters Patent. Original application tiled February7. 1906, Serial No.

Patented tiet. t?. Hiott.

300,020. Divided and this application tiled March 12.

1907. serial No. 361.922.

The iu'ventionrelates to mechanism for thc production ot' a constanti'nixture of gas and air for illuminating purposes, with the employmentot a suction and forcingr apparatus, the action of which isregulated independence upon the consumption. and which .A produces and sucks the,mixture at low presfor.

sure. and sends it at a'n increased pressure into thc service pipe.

The object `ot' the invention is a double eontr'ol ot' thecross-sections of the gas and air inlets tor-the piu'pose of equalizingon the one hand the ditl'erenec of pressure Ioetween the sur-tion pipglt'or the. mixture and the supply pipe t'or the gras. and ou the otherhand the ditlerenee ot' pressure between the suet ion pipe lor themixture aml the air sulpply pipe. `lu oi'der to obtain this object'. tie inlets `l'or the ,iras and air are enlarged and reflui-ed under theiiilluenee ot' a governor in correspon(lenee with llie increase and de-,crease ot' theipiantities ot gras'and air mix-- -tui'e consumed.

This control ot' the e'rosssections ot' the ililets is proportionaltothe consumption ot' the mixture. 'llie second adjustment ot' thecross-section takes place in positive. dependence. upon lthev tirstproportional adjustmentl in such a iiiauiier. that some or all ol' thecross-sections experience au additional adjustment. so that'for everyseparate setting` etl'eeted by the tiist proportional adjustment errors.are- 'l`liese errors hare their origin iii' tlie sources ot' error iiithe governor. tor example, with tloat liells in the variation-vot' thedepth ot'iiunnersion` with membrane governors iu the4 ditl'creiices ofteusionwhich arise in the meniln'ane. aud so torth, further in thet'aet. that the eoetlieieutot' resistance compensated y for 1Qases otdit'l'crent specitic weights. sneh as illuminating' gas and air are.does not alter proportionately with the enlargement or restriction ofthe apertures ot' ditlerenl magnitude. .Aerox-.dingljp Iliesmalleradmission cross-sections are. the more speedily and higher does theresistance curvo exceed the proportional amount. These causes ol'compensated for by the second 4 ot' the cross-section of thc inlets.

Several examples for cariying thc process into practice are illustratediii thc accomadjustment paiiying drawing.

Figures I to 3 illustrate an apparatus with rotary forwarding device,and adjustable cylindrical obturating member; Figs. 1 and 2 show thegovernor in two vertical sectionsl in two planes perpendicular to eachother, while Fig. 3 is a` horizontal cross-section. Fig. 4 representsanother constructional forni with adjustable obturating member. Figs. 5and tiv illustrate in side elevation and horizontal section respectivelyan apparatus, the obturating member of -which has curved 'closing edges.Fig'. 7 shows a simil-ar con- .structional form with inclined closingedges Ion the obtnrating member. Fig. 8 shows au tor gas and air. l

ln the apparatus for cart-ying the invention into practice which isillustrated in Figs. l to 3, the suction and forcing device (for'example a continuously rotatingtlcrice l) kwliieli may be driven. bymeans ot'a belt. 2, sucks the mixture of gas and air from the suctionconduit 5 aud thc suction chamber 4 eonnccted with it4 and forwards itto. the 'service pipe El' withvwliieh the. burners or they like areconnected. 'llic casing 4 of the suctioii chamber, which provided withthe sockets t5. Taud 8, Fig. It. 'l`lii"oug]i-tlie socket t3 the airenters the sin tion and mixingchamber' t while, thc ,Qa-s enters throughthe socket 7 from the conduit il. as shown in Fig.. 2, by means ot' a.pressure regulator t0 'of iinyknowii eonsti'uetion, and ot' the gassupply pipell. 'The mixture ot gas. and air formed under the influenceot' the suction'etfcct of the suctioiiand forcing apparatus l passesontI ot' the suction clianij lier. 4 .into tilieniixturc suctionconduitI 5 through the. socket. 8, Fig. .3. rlhe sui-tion undesirablevariations of' the mixture ari` is here cylindrical. is

tit)

apparatus with separate obturating members v.

tit)

null

olmnher is in eoninnmiczition with tho onzimher i3 li); moons oi.openings lf3 formed in the hoiioni oi' the casing Ll.

The governor consists. in tho prescrit conslrnetionnl forni, ol anienilnnne il, which, hy means of a plate l5 and the rofl itl. carriesthe ohtnrnting member 17 commento the gus and, air inlets. The rorl lllis rotatably fixed to the part lll, 15. The. obtnrating member l? isformell :is a hollow piston, the walls of which are provided with theopenings 18, if) and "iii, for the admission air :ind gos, und thedischarge of the mixture respectively (Fig. Il). The obturating member,for the purpose of 'facilitating 'the mmintnoturo in this forni ofapparatus, does not :novo oiroctly in front of the admission unddischarge sockets of 'the suction easing il, but in this laitier' :iAsecond. cylindrical ncrv 2.2 is :irrangcsl with openings 9G., Qi, 94.-.situated in front of the openings oi those soclicis. and eopmrnjting'with the openings 19;. i9 and :'33, ol ille olituraling member. Theopenings lH, lil. are :irrzingozl roliiiively to cnoh other in snr-li nmanner thai on rotating the ohtnrating member one of `the admissionopenii 18.. il), is smaller than the other. The dis charge apertura-i.i'oz the mixture Q3, is hoivover of such nszo that. when this obtnmtingmember is rotated no restriction ofthe. :lisrhnrge :ro, section 2.55.2.4, trikes place.

fis soon fas the pressure in the service pipe f3 risas or 'fam beyond ncertain limit.A the supply l luv the suction and fore* ing son maissupply inl iinenoos 'lio `AQjovernor lL. owing upon tho ooiurnl' ig:n'ioniher iT,- ivliicn governor is rs l. f iowxreil according thenchnission opor-loros for nir nml are to he. onlnrgg'otl or vos urteil.This adjustment of the oliturfitinp; inoniher. which is exolnsivclyproporlinnate io thc (nxnntiiies supplied, is not. howiwer suliiricnl toolii :1in zi Completely constant, nu@ of rullo for fus :uur nir when liumusuuipl 'vm-ies. .is :iliennv stnlcil Wxriirnlioin with colui-Tumult ori sections. s 'nl nia' do not, :ilter rorrospowl. .zgijgpri,Hc-rilunnlii" lust, on tlir ci' itruifv iimrouse or :lef-roof@nugn'opurrion- :irey hy n, roi' 'mut uomini. ,ln them-onstrueifmillnsii'uteil in For.. 'i *o l, il sveoxnl .fuljzistii' inewnipiumiiiiiggj for tiles-n suscim ."osis'nnif coniisl of :ininffiixuzl "nl l merlin: oi till' ul'liul'zllin tho inlroilucimn lo tn!uf olzzmfiier easing Vl.

liwn'iso ne nog' 1ozor im cover 3l) tiuz :uul linl nir {uliuission:iperuro 35?.

The obturating inenilioi i7 is guided on the inclined holt Q6 by meansof the prow tions 31.

By means of tho Second rogulnting (levier 26, the following result isobtained. is soun as owing' to .ineronser'i consumption, u more vigorousflou' of gies :1nd nir lakes place. mul the obturnting member l? risesunder the. influence of the governor il, tho inelinewl guide 2h', 3lcauses the body i7 to eifect :1 rotation around its :ixis in addition toils axial movement, thereby compensating thr- (liilerenoe which wouldfollow with an nl toi-:ition of' the cross-section produced oxelnsivelyby the governor 14 owing` to tlm. unproportionnl variations ofresistance.. The zllterntion of the cross-section occurring in thevertical (lireetion'corresponds exclusively to the. proportionaladaptation to tho oonsinnption ofthe was and air mixture. The. rotationof the oiloturating member. on the other hond, with an increasingconsumption produces n restriction of the air inlet in the transversedirection7 and a smaller resirie tion, maintaining constant, or an onlnrment, of the. gas admission cross-section transversely, according to thelifigli't. of the obturnting member. On the other hund, with an excesspressure in the service pipo there is :in increase ofthe transversediniension for the air inlet as compared with the transverse dimensionof the ms inlet. "he magnitude of the alter-ation4 0I tho transversedimensions of the inlets is dependent. upon the calculated orempirically determined 'lhe apparatus shown inv Figs. C riill'ers :ironithat nlrrzfly oxihilninsrl ln' tlv: tlill'erent :irrnngcnien unilformation o" ihn ming inmnlier. This laitier is Foru-usd l n nin Si :isn slide wlw 3'? rotui'uiilc :ir/inno :unl carri-rs. ilu* gus mlm-:sinon:incr

lli)

towardithv vtt-sing dii'vvtion. In this vasv.

vhamhvr t3, vommunivatvs h v mvans of a pipv fr.' with thil intvrior ota lloat hvll 47. 'l`his lattvr vng'ag'vs with a lv\'vr arm t5, on thvrotar slidv \\'.|l\'v iti h mvansot' a rod lt.

'l`hv opvijation is as t'ollows: lf thv von sumption ot' thv gas and airniixturv is vonstant. thv snvtion provvss is also vonstant. and avonstant snvtion prvssnrv is tormvd in thv vhamhvrs 43.41' and to this advtinitv position ot thv loat hvll vorrvsponds. y'hvn thv vonsnnmtiondvvrvasvs. it' no rvgnlation wvrv proridvd. thv prvssurv in thv sin-tionpipv -tl would invrvasv hvvansv thv ttow to thv snvtion vhamhvrs ot'tht` t'orving apparatus would taltv plavv with a smallvr vvlovit)Yvorrvsponding to thv tlvvrvasv ot' ,'vlot-ityv ot' thv flow through thvsuvtion pipvs toward thv snvtion vhamhvr ot' thv suvtion apparatus.'l`hv invrvasv ot prvssurv in thv suvtion vhamhvrs is howvrvr prvrvntvdowing.: to thv l'avt that thv tloat hvll -tT risvs and vausvs arvdnvtion ot thv vross svvtion for thv admission ot' l:fas and air.Owingr to thisl throttling' ot" th'v intaltv of air and gas thvrvsistanvv opposvd to thv suvtion provvss is invrvasvdto snvh an vxtvntthat thv normal prvssurv usually |')rv\'aililrgl is rvvstahlishvd. 'hvn.on thv othvr hand. thv supply fu'rnishvd hy thv snvtion apparatus againinvrvasvs so that a lowvr suvtion piassnrv vxists in thv suvtion pipvtt'and in thv thvJloat hvll must again flesvvmh hy whivhmvnflvadmissionl vrossA svvtions for air and gas arv vnlargvd.

Now. in ordvr to volnpvnsatv for thv prvjudivial intlnvnvv ot' thvvariations ot' thv rvslstanvv for gas and air whivlrwas rvt'vrrvd to inthe intl'odnvtion to this sptwi'tivation` in-thv.vonstrnvtionillnstratvd in Fig. 5, onv of thv two inlvt apvrt'nrvs ZH. 35. ismotlitivd rvlati\'vl \y to thv opvningsrs or it!) inV a gitv'n mann'vr.t'or vxainplv. h v providing' thv lLjas adInission apvrturv-EH with avnrrvd vlosing vdgv As shown in Fig. 5 inthis vonstrnvto'nal form thvopvning 35S for thv. s npply ot' air is liinitvd h v two radial linvs.and h v two arvs ot' virvlvs with thv pivot )ttt as vvntvr. 'lhv gas:'idmission opvning itt is tot'mvd ill a similar mannvr. vxvvpt that thvouter virvular arv is rvplavvd h v an vvvvntliv ssnmingalso thatl thvopenings 3ft-and 39situatvd"hvhind thv slidv Yalvv havv thv samv vrosssvvtion; it will hv -ohvious that with a rotation ot' thv slidv ralvv inthv dirvvtion indivatvd hy thv arrow. thv opvning- 35 will hv ohtnratvdproportionatvly to thv anglv of rotation. whilv thv opening 1H will hvohturatvd hy an avvvlvratvd amount owing tothe dvvrvasc of thv radiithvrvfo" tionsl of tvrm i nvd opvning.

thv vonuwnsation t'or thv variafs'istanvv is ohtai'nvd hy thvprvdvmodilivation o't' thv "width of onv 'l`hv rvgfulation whivh is hvrvohtainvd h v thv varying'-t'ornmtion ot thv onv opvning vould ot' vonrsvhv transfvrrvd to thv two opvnings hy :uipropriatv moditivations. 'lhvvxavt form ot' thv vnrrvs to hv vmployvd must hv adaptvd vithvrvmpirivaltv or h v valvnlation to thv vondit'ions ot' vavh apparatas.

A\vvording v to thv quality of thv gas-vs whivh arv to hv suvkvdaudmlxvd. it is nvvvssar to vtt'vvt an avvvlvration or a rvtardation of thvvlosing movvmvnt hy thv svvond adjustmvnt as vomparvd with thv h'rstproportional ad liustmvnt. 'lhv t'orms ot' thv admission apvrturvs h vmvans ot' whivh thvsv adjustmvuts may hv ohtainvd may ot' voursv \'arlargvlv and may hv transtvrrvd to onv or morv ohturating` vdg'vs.

ln thv vonstruvtional form illustratvd in l"i. T. instvad ot' a rotaryslidv \'al\v. an oh turating'. slidv 4H displavvahlv in an axial di-vrvvtion and vonnvvtvd with a float hvll 51 is providvd: this valvvliltvwisv varrivs hoth thv admission apvrturvs 49. 5U t'or gas and air.

"lhv svparatv'adjnstmvnt oll thv admission vross' svvtions is ohtainvdin this vasv analo- L'ouslv to that in Fig. 5. owing to ,thv t'avt thatthv vlosing vdg'vs ot' onv or hoth admission apvrtnrvs arv vham'vrvd.'.\s shown in Lhv drawing, ill thv vxamplv hvrv svlvvtvd thisadluissionapvrturv 5t) is maflv ot` rhomhoidal torni. Ut'hvrwisv thv opvration isthv samv as in thv apparatus illustratvd in Fig'.

ln avvordanvv with Fig. H. a float hvll 52X avts h v mvans ot' thv rods54. a5. on two spvY vial ohtulating mvmhvrs t'or thv gas and airadmission whivh arv t'ormvd as vovks t'` 5T. 'l`hv vovk .'16 isarrallgvd in thv llas pipv 5H and thv vovk 5T in thv air pipv 55). lnthis vasv thv prvssurv in thv snvtion vonduit tit) is transmittvd to thv'intvrior ot thv fioat hvll 53 through a subsidiary vonduit Tt). In thvvasv ot' vxvvss prvssurv `in thv svr\'ivv pipv` thv .tloat hvll 53risvs` and in doing sol rvstrivtsthv vross-svvtion for thv pass-:tgv otl`as and air hy mvans o tI thv vot-ks 5G and .3T unti-l thv vonstantsuvtion prvssnrv is rvvstahlishvd. ()n thv othvl` hand. whvn thvvonslnnption ini'rvnsvs thv vross svvtion ot thv passagfv is vnlal fvd.luordvrto vlilninatv thv spvvial \aria tions ot.rvsistanvv t'or ras andair whivh havv alrvady hvvu rvtvlrvd to a knuinhvr otl tiluvs. onv orhoth' ohturating mvmhvrs arv nroiidvd with spvvial mvans t'or svpa'ratvadjustmvnt ot' thv vross svvtion ot' thv passagv. whivh mvans may hvfixvd or adjnstahlv. 'lhis separate rvgulation otl thv vross svvtion ot'the passagvs is rvndvrvd dvpvndvnt upon a variation of thv vlosingvvlovity ot' thv vovks 56. 57. in thv vxaniplv illustratvd in Fig. H.'lo this vnd an invlinvd or'vam-likv tavv (il is providvd on thv rod 55and upon thv asvvnt and dvsvvnt of thv float hvll 53 runs on n iollvr tattixvd to thv liquid rvsvrvoir (i2. By thisl mvans thv rod 55 isrotatvd around its point ot' suspvnsion (-t. 0n thv lowvr vnd thv rod 55is j iuided liy means of astrid G5 in tho slot tt ot' the two armedlever (38 roeltably suspended at (il, and whieh with its other lend artsupon the eork 57 by in ans ot tho rod (Si). By means ol? thisarrangeiiiont the result is attained that the alteration of the crossseetion ol the passage at' 57 does not take place uniformly exrlusivolyunder the inuence of the governor aeted upon by the consumption, lintwith atfteleration, whereby ditierenoes in the rosistanieot-i areavoided.

i in the example represented, only the one rod eoi'iiwrates with tho oneobtiirating niiiinlier 5T. Obviously, the rod fi-'t might ertrrt asimilar aoti .i. The Cain surtaoeitl may lie. 'ined to its sui'iportingrod in such a manner that its inclination may he adjusted. and further.instead ot an areelerated alteration ot the erossseetion. it may eauso aretarded alteration just as require/.l hy the pruvailing eontlitions.

From what has been stated. it will he, apparent that the novel prut-essmay he earried into proftico in numerous wir i it essential that in allcast-2s. the erossAset-,tion of the and. air inlets should lio alteredin a doulilo sense. for the purpose. o? niaintainii'ig constant thedifference of pressure hetweeiv tho suction conduit on tho ont: hand.and the supply conduit. for ras and air on the other hand. whereby themeans for autoniatieally varying the rross-set'tioi'is ot' the admissionapertures. tho so talled admission governor. may lie displared liy meansot' tht` pressure, or

`.li v the suetion eondiiit or in any other ltuown manner.

p i .i t in fr; H '11 i. atom in. .inuit (.tsoiipon n vii. if, notedthat. lijf' iariations ot' pressure in the rontainid voiuniil ot thomixture. a direet r-oiitrol exei'eisei't over the intlow ol' the ras andang and also that hy further varia N tions otl pressure ot saidotplosivo niiitii'e an indirewt or remote Haiti-ol is also exer- `/srzlover ihry inflow. ihr net. rosnlt living .tl iiej'ond reiiaiiiprossiiies in the vontaiiieii volumii ot' the aeritorni liod'i' thetip-.ailing ot` :litpasiizngrs is disproiioz'tionate so what wouidtiilte loro it' iii.. ri'iiitrol over the inllow were iii :i snipiei'iiararl'er.

il'iiat li-lziiiii :init iii-siii io. are or lietv tors Patent' oi' thuiniit-d Stato-i is:

.Xn apparatus tor iiiipi'odnvtion ot' a ronstaiit mixture oi" las andair. ioiiipiising :i'sui'tion drvii'o. a mixing 'liaiiiiiei' 'oinni'itid tlieaeni'li and piiivnlod .'iitli iiilots for i :ind air .so :isto torni :i niituro divini?. nini v:'.r-.iiig [isproporA l nrlvt,`- saidmean. liy ii. alteration.. in ii .siro ot sani ifiixtur.

fiie i-oniliinrition oli :i

nii-:ins iiir so torni :i niirtiiiro tlioreot'. moans inovalile il.'alterationy ot: pressure otr saii'l mixture for varying, tliesizo ofsaid inlets, and unichanisin controllable directly hy said means t'orqualifying' the action of said means so as to rendor the size of saidinlets disproportionate relatively to each other.

3. The combination. of a` Suction device, :i suction pipe connectedtl'iereiwithil a hollow member connected with said suction pipe andadapted for holding?r a. mixture of iras and air, said hollow memberbeing provided with an opening -t'or admitting gas and another opening;for admitting air, an obturating menilior mounted within Said hollownioinher and provided with openings adapted to register more oriiiipeilootly with those of said hollow member, means controllaliledirectly by the pressure of said mixture t'or moving said ohturatingmeinlier relatively to said hollow ineinher so as to enlarge orrestrii-t proportionately the sup.

sin-tion pipe uonneited therewith7 a niiiingi elianilier eoniiet-tedwith said suction pipe, and provided with inlets for adniittin; r gasand air so as to t'orni a niixtiirotherein. means eoiitrollalile liypressure ot' said mixture for varying proport ionately tht` sizes ofsaid inlets. means lieeoniiimi operative liy the motion of the lirstmentioned means t'or at'- t'ei'ting said tirst-iiientioiied means so asto render disproportioiiati the variation in the sizes ot' said inlets.and adjusting iiiei'lianisui t'or\'ar.viu;' thtl eileet ot' saidlast-nienlioni-d means.

5. 'llho roniiiination oti a suction devil-e', suetion pipo loadin;rthereto. a *uiting il|ani livr eoiineited with .said sin-tion pipe andprovided with inlets l'or Aas :ind air so as to torni a mixturetliireol'. an olituratiug u'ienilier i'or varying tlnsixos ol' saidinlets. means eontrollalile liy pressure t'or a tii:iting saidoliturating nieiiilirr. means heroining' opeiatiie liy the inotion otlsaid aliove means for rpialit'yiiig` tho inoveiiii'ut of saidolitui'atiiitY nienilier relatively to said luixiiif elianilier t'or thepurpose ot rendoi'iiuf dispioportionate tho relative ruparity ot' theinlots for lrags and air. and niei'lianisni adV4 iiistalile liv hand foradjustingA tlii. moro nii-nt ot' said oliluraiing' niemliei.

ln witness hereof l have hereunto --i-t iltV hand in tlii` presi-nre oftwo ivituessrs,

ltlf) Ilo

